So typing 'C-u RET' in the "*xref*" buffer quits its window
before navigating to the selected location.
-*** New option xref-search-program.
-So far Grep and ripgrep are supported.
+*** New options xref-search-program and xref-search-program-alist.
+So far Grep and ripgrep are supported. ripgrep seems to offer better
+performance in certain cases, in particular for case-insensitive
+searches.
** json.el